An object or material reinforced has extra strength added to it so it can handle more weight or stress.
You often hear about reinforced materials like steel beams that hold up buildings. In construction, engineers use steel reinforcements inside concrete to make it stronger and less likely to crack under heavy loads. Similarly, if you're out hiking and you have a backpack with a reinforced shoulder strap, it's designed to bear the extra weight of your gear without breaking.
To strengthen, especially by addition or augmentation.
Example: He reinforced the handle with a metal rod and a bit of tape.
Having been or containing reinforcement
